Table 3.

Tumor-to-background ratios at different time points after injection of ⁴⁴Sc/⁶⁸Ga-labeled DOTA-NOC and NODAGA-NOC

	44Sc-DOTA-NOC			68Ga-DOTA-NOC
AR42J	30 min p.i.	2 h p.i.	5 h p.i.	30 min p.i.	2 h p.i.
Tumor-to-blood	3.69 ± 1.52	58.2 ± 6.64	52.0 ± 4.38	5.22 ± 1.07	46.2 ± 2.28
Tumor-to-liver	6.87 ± 2.38	13.1 ± 2.16	15.7 ± 2.82	2.44 ± 0.36	2.22 ± 0.22
Tumor-to-kidney	0.79 ± 0.19	1.01 ± 0.06	0.85 ± 0.04	1.20 ± 0.21	1.41 ± 0.18
	44Sc-NODAGA-NOC			68Ga-NODAGA-NOC
AR42J	30 min p.i.	2 h p.i.	5 h p.i.	30 min p.i.	2 h p.i.
Tumor-to-blood	5.23 ± 0.22	50.3 ± 16.8	78.6 ± 6.95	4.32 ± 0.58	76.0 ± 4.31
Tumor-to-liver	8.13 ± 0.72	11.9 ± 3.26	11.6 ± 1.51	4.36 ± 0.91	5.88 ± 0.68
Tumor-to-kidney	0.80 ± 0.10	1.22 ± 0.34	0.87 ± 0.24	0.58 ± 0.10	0.85 ± 0.08